From 42b02c47be9b285099203e44a2570636d4ca6f03 Mon Sep 17 00:00:00 2001 From: Lukasz Kasprzak Date: Fri, 11 Sep 2026 14:47:10 +0200 Subject: krino: foundation — sexp reader, config language, init/new/check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- internal/sexp/fuzz_test.go | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 internal/sexp/fuzz_test.go (limited to 'internal/sexp/fuzz_test.go') diff --git a/internal/sexp/fuzz_test.go b/internal/sexp/fuzz_test.go new file mode 100644 index 0000000..01d436b --- /dev/null +++ b/internal/sexp/fuzz_test.go @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +package sexp + +import "testing" + +// FuzzParse checks that Parse never panics and that every node it returns +// spans valid bytes, with lists pointing at their own parentheses. +func FuzzParse(f *testing.F) { + for _, s := range []string{`(a "b" (c))`, `"\"`, `(((`, `)`, "; x\n(y)", `("ł" x)`, "\xff", `"\\"`} { + f.Add([]byte(s)) + } + f.Fuzz(func(t *testing.T, src []byte) { + nodes, err := Parse("f", src) + if err != nil { + return + } + walk(nodes, func(n *Node) { + if n.Pos.Offset < 0 || n.End.Offset > len(src) || n.Pos.Offset >= n.End.Offset { + t.Fatalf("bad span %d..%d in %q", n.Pos.Offset, n.End.Offset, src) + } + if n.Kind == List && (src[n.Pos.Offset] != '(' || src[n.End.Offset-1] != ')') { + t.Fatalf("list %d..%d does not span its parens in %q", n.Pos.Offset, n.End.Offset, src) + } + }) + }) +} -- cgit v1.3